package com.sky.controller.user;

import cn.hutool.core.collection.CollUtil;
import com.sky.pojo.Dish;
import com.sky.result.Result;
import com.sky.service.admin.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.connection.ConnectionUtils;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**
 * @Description DishController
 * @Author weibaoping
 * @Date 2025-08-18 4:07 PM
 */
@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "菜品浏览相关")
public class DishController {

    @Autowired
    private RedisTemplate redisTemplate;
    @Autowired
    private DishService dishService;;
    /**
     * 根据分类id查询菜品列表和口味
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("查询菜品列表")
    public Result<List<DishVO>> getDishWithFlavors(Long categoryId) {

        //构造redis中的key，规则：dish_分类id
        String key = "dish_" + categoryId;
        //查询redis中是否存在菜品数据
        List<DishVO> list = (List<DishVO>) redisTemplate.opsForValue().get(key);
        //如果存在，直接返回，无需查询数据库
        if (CollUtil.isNotEmpty(list)) {
            return Result.success(list);
        }
        //如果不存在，从数据库中查询，将查询到的数据放入redis中
        log.info("查询菜品列表:{}",categoryId);
        list = dishService.getDishWithFlavors(categoryId);
        redisTemplate.opsForValue().set(key, list);

        return Result.success(list);
    }
}
